EP1450009A2 - Actionneur électromagnétique de commande de soupape pour moteur à combustion interne - Google Patents
Actionneur électromagnétique de commande de soupape pour moteur à combustion interne Download PDFInfo
- Publication number
- EP1450009A2 EP1450009A2 EP04300036A EP04300036A EP1450009A2 EP 1450009 A2 EP1450009 A2 EP 1450009A2 EP 04300036 A EP04300036 A EP 04300036A EP 04300036 A EP04300036 A EP 04300036A EP 1450009 A2 EP1450009 A2 EP 1450009A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- electromagnet
- plate
- magnetic
- valve
- parameters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
- F01L2009/2107—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils being disposed coaxially to the armature shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2132—Biasing means
- F01L2009/2134—Helical springs
- F01L2009/2136—Two opposed springs for intermediate resting position of the armature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2151—Damping means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/01—Absolute values
Definitions
- the present invention relates to an actuator electromechanical valve control for combustion engine internal.
- valve 110 which comprises mechanical means, such as springs 102 and 104, and electromagnetic means with two electromagnets 106 and 108, for control the position of valve 110 by means of signals electric.
- the tail 113 of the valve 110 is applied against the rod 112 of a plate magnetic 114 located between the two electromagnets 106 and 108.
- valve 110 alternates open positions or closed, called switched, with transient movements between these two positions. Thereafter, we will call “state switched” state of an open or closed valve.
- the actuator 100 requires the use of a plate magnetic 114 of high mass due, in particular, to its thickness Sp important. This thickness is generally equal to the width Se of the branches of the electromagnets to obtain a optimal actuator operation. Indeed, the branches of the electromagnet and the plate thus form a circuit magnetic of constant section.
- Figure 2 is a diagram showing the evolution of the effort electromagnetic (on the ordinate) as a function of the value of the air gap (on the abscissa).
- the present invention overcomes the disadvantage mentioned above.
- a valve actuator for a motor internal combustion comprising at least one electromagnet and one magnetic plate whose movement controls the movement of the valve which is characterized in that the parameters of the electromagnet and the plate are such that at least part of the magnetic circuit formed by the electromagnet and by the plateau is in a state of magnetic saturation when the magnetic plate is located near the electromagnet.
- the parameters allowing to obtain the saturation of minus part of the magnetic circuit are in particular the parameters of the material constituting the plate or the electromagnet, and / or the shape, and / or the dimensions of this plate and / or electromagnet.
- said parameters are such that the plateau (or electromagnet) is in a state of magnetic unsaturation when it is far from the electromagnet.
- said parameters are such that the state of magnetic saturation, in particular of the plateau, is product for an air gap between 0 and at most 1 millimeter.
- the invention relates generally to a valve actuator for internal combustion engine comprising at least one electromagnet and a magnetic plate whose movement controls the movement of the valve, which is characterized in that parameters of the electromagnet and plate are such that at least part of the magnetic circuit formed by the electromagnet and the plate is in a state of magnetic saturation when the magnetic plate is at proximity to the electromagnet.
- said parameters are such that the magnetic circuit is in the state of magnetic unsaturation when it is far from the electromagnet.
- the parameters are such that at least part of the circuit magnetic is in the state of magnetic saturation for a air gap between 0 and 1 millimeter maximum.
- Parameters of the electromagnet and the plate include, according to one embodiment, parameters relating to the shape and / or dimensions and / or nature of the material (or materials) constituting the plate and the body of the electromagnet and / or the intensity of the current flowing through the solenoid coil.
- the thickness of the plate is such that this plateau is magnetically saturated near the electromagnet.
- the magnetic plate has for example at least a narrowed portion intended to be saturated when this tray is located near the electromagnet.
- the material composing the plateau has a lower saturation threshold than that of material composing the body of the electromagnet.
- the actuator comprises a regulator controlling the current in the electromagnet.
- the invention also relates to a combustion engine. internal comprising at least one valve according to any one of the preceding claims.
- the magnetic plate 114 present at its ends and at its center a thickness h of the same order of magnitude as the width Se of the end branches 140 and 142 of the magnetic circuit of the electromagnet 108 (or 106).
- the plate has parts 144 and 146, of thickness h 'substantially smaller than the thickness h.
- the magnetic plate 114 has a shape such that it constitutes a constriction for the magnetic flux 150 generated by the electromagnet 108, so as to concentrate it in these constrictions.
- the magnetic flux 150 being conservative, the fact reducing the section of the tray 114 in places allows concentrate the magnetic induction in these parts 144 and 146 of thickness h '. So magnetic induction has a high value in the narrowed parts and so we can get a saturation of the material in these parts 144 and 146.
- the magnetic plate 114 has a constant thickness h ′. We can thus saturate the entire magnetic plate. In addition, the mass of the plateau is even more reduced, which further reduces the energy dissipated, so the noise. In addition, with a reduced mass, the due to its low inertia, the platform can be accelerated better at the start of its race, when it is still far from the electromagnet which attracts it
- the body of the electromagnet is as saturated when the air gap is small.
- a regulation in combination with the invention This regulation will be facilitated by a better linearity of the force attraction, allowing easier control of the platform when it approaches the electromagnet.
- curve 41 illustrates the variation of the force as a function of the value of the air gap for an actuator according to the invention, while the curve 42 corresponds to a conventional actuator.
- Curve 41 is linearizes when approaching the electromagnet, when the air gap tends towards zero, while curve 42 increases so hyperbolic.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Magnetically Actuated Valves (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- la figure 1, déjà décrite, représente un actionneur connu,
- la figure 2, déjà décrite, représente, pour un actionneur connu, la variation de l'effort magnétique de l'électroaimant sur le plateau en fonction de l'entrefer,
- les figures 3a et 3b sont des vues en coupe d'un actionneur selon deux modes de réalisation de l'invention, et
- la figure 4 est un diagramme analogue à celui de la figure 2 et montrant l'effort magnétique de l'électroaimant sur le plateau en fonction de l'entrefer pour un dispositif conforme à l'invention et pour un dispositif de l'art antérieur.
Claims (8)
- Actionneur de soupape pour moteur à combustion interne comprenant au moins un électroaimant (1061, 1081) et un plateau magnétique (1141) dont le mouvement commande le déplacement, de la soupape, caractérisé en ce que des paramètres de l'électroaimant et du plateau sont tels qu'au moins une partie du circuit magnétique formé par l'électroaimant et le plateau est dans un état de saturation magnétique lorsque le plateau magnétique se trouve à proximité de l'électroaimant, lesdits paramètres étant tels que le circuit magnétique est dans l'état de non saturation magnétique lorsqu'il se trouve éloigné de l'électroaimant.
- Actionneur selon la revendication 1 caractérisé en ce que lesdits paramètres sont tels qu'au moins une partie du circuit magnétique est dans l'état de saturation magnétique pour un entrefer compris entre 0 et 1 millimètre au maximum.
- Actionneur selon la revendication 1 ou 2 caractérisé en ce que les paramètres de l'électroaimant et du plateau comprennent des paramètres relatifs à la forme et/ou aux dimensions et/ou à la nature du matériau (ou des matériaux) constitutif(s) du plateau et du corps de l'électroaimant et/ou l'intensité du courant qui traverse la bobine de l'électroaimant.
- Actionneur selon la revendication 3 caractérisé en ce que l'épaisseur du plateau est telle que ce plateau est saturé magnétiquement à proximité de l'électroaimant.
- Actionneur selon la revendication 3 caractérisé en ce que le plateau magnétique présente au moins une partie rétrécie (144, 146) destinée à être saturée lorsque ce plateau se trouve à proximité de l'électroaimant.
- Actionneur selon l'une des revendications 3 à 5 caractérisé en ce que le matériau composant le plateau présente un seuil de saturation plus faible que celui du matériau composant le corps de l'électroaimant.
- Actionneur selon l'une des revendications 1 à 6 caractérisé en ce qu'il comprend un régulateur contrôlant le courant dans l'électroaimant.
- Moteur à combustion interne comprenant au moins une soupape selon l'une quelconque des revendications précédentes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0301948A FR2851290B1 (fr) | 2003-02-18 | 2003-02-18 | Actionneur electromecanique de commande de soupape pour moteur a combustion interne |
FR0301948 | 2003-02-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1450009A2 true EP1450009A2 (fr) | 2004-08-25 |
EP1450009A3 EP1450009A3 (fr) | 2005-03-30 |
EP1450009B1 EP1450009B1 (fr) | 2011-07-27 |
Family
ID=32732015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04300036A Expired - Lifetime EP1450009B1 (fr) | 2003-02-18 | 2004-01-22 | Actionneur électromagnétique de commande de soupape pour moteur à combustion interne |
Country Status (5)
Country | Link |
---|---|
US (1) | US7111595B2 (fr) |
EP (1) | EP1450009B1 (fr) |
AT (1) | ATE518048T1 (fr) |
ES (1) | ES2365916T3 (fr) |
FR (1) | FR2851290B1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008090452A2 (fr) * | 2007-01-24 | 2008-07-31 | Toyota Jidosha Kabushiki Kaisha | Soupape entraînée de façon électromagnétique |
EP3358582A1 (fr) * | 2017-02-03 | 2018-08-08 | Hamilton Sundstrand Corporation | Actionneur électromagnétique alternatif avec armature à équilibrage de flux et noyaux fixes |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5427402B2 (ja) * | 2008-12-22 | 2014-02-26 | 三菱重工業株式会社 | フィルタの逆洗装置 |
ATE531055T1 (de) * | 2009-02-05 | 2011-11-15 | Abb Oy | Permanentmagnet-gleichstromdrosselspule |
GB202005894D0 (en) * | 2020-04-22 | 2020-06-03 | Wastling Michael | Fast-acting toggling armature uses centring spring |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3858135A (en) * | 1973-08-14 | 1974-12-31 | S Gray | Push-pull linear motor |
EP0816644A2 (fr) * | 1995-02-15 | 1998-01-07 | Toyota Jidosha Kabushiki Kaisha | Un dispositif d'entraínement de soupape utilisant une bobine électromagnétique pour déplacer un corps de soupape avec moins de bruit |
EP0936636A2 (fr) * | 1998-02-10 | 1999-08-18 | DaimlerChrysler AG | Electroaimant |
US6308667B1 (en) * | 2000-04-27 | 2001-10-30 | Visteon Global Technologies, Inc. | Actuator for engine valve with tooth and socket armature and core for providing position output and/or improved force profile |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4533890A (en) * | 1984-12-24 | 1985-08-06 | General Motors Corporation | Permanent magnet bistable solenoid actuator |
DE3500530A1 (de) | 1985-01-09 | 1986-07-10 | Binder Magnete GmbH, 7730 Villingen-Schwenningen | Vorrichtung zur elektromagnetischen steuerung von hubventilen |
DE3513103A1 (de) * | 1985-04-12 | 1986-10-16 | Fleck, Andreas, 2000 Hamburg | Elektromagnetisch arbeitende stellvorrichtung |
JP2707127B2 (ja) | 1988-12-28 | 1998-01-28 | 株式会社いすゞセラミックス研究所 | 電磁力バルブ駆動装置 |
DE4108758C2 (de) | 1991-03-18 | 2000-05-31 | Deutz Ag | Magnetventil für eine Kraftstoff-Einspritzvorrichtung |
GB9613730D0 (en) * | 1996-07-01 | 1996-09-04 | Perkins Ltd | An electro-magnetically operated valve |
DE19651846B4 (de) * | 1996-12-13 | 2005-02-17 | Fev Motorentechnik Gmbh | Verfahren zur elektromagnetischen Betätigung eines Gaswechselventils ohne Polflächenberührung |
FR2784497B1 (fr) | 1998-10-07 | 2000-12-15 | Sagem | Actionneur electromagnetique a palette aimantee |
JP4126787B2 (ja) | 1998-12-07 | 2008-07-30 | トヨタ自動車株式会社 | 電磁駆動装置 |
JP3715460B2 (ja) * | 1999-03-31 | 2005-11-09 | 株式会社日立製作所 | 機関弁の電磁駆動装置 |
JP3573263B2 (ja) | 1999-07-21 | 2004-10-06 | 愛三工業株式会社 | 電磁アクチュエータ |
DE10003928A1 (de) | 1999-11-25 | 2001-06-07 | Daimler Chrysler Ag | Elektromagnetischer Aktuator |
FR2812024B1 (fr) | 2000-07-18 | 2003-04-04 | Peugeot Citroen Automobiles Sa | Actionneur de soupapes de moteurs a combustion interne |
FR2812025B1 (fr) | 2000-07-20 | 2003-01-24 | Peugeot Citroen Automobiles Sa | Actionneur electromagnetique de soupape de moteur a combustion interne |
JP2002130510A (ja) | 2000-10-18 | 2002-05-09 | Toyota Motor Corp | 電磁駆動弁 |
FR2822585B1 (fr) | 2001-03-20 | 2003-08-15 | Peugeot Citroen Automobiles Sa | Actionneur electromagnetique de soupape de moteur a combustion interne |
JP2002364391A (ja) | 2001-06-08 | 2002-12-18 | Toyota Motor Corp | 電磁駆動弁の中立位置変化検出装置 |
-
2003
- 2003-02-18 FR FR0301948A patent/FR2851290B1/fr not_active Expired - Fee Related
-
2004
- 2004-01-22 EP EP04300036A patent/EP1450009B1/fr not_active Expired - Lifetime
- 2004-01-22 ES ES04300036T patent/ES2365916T3/es not_active Expired - Lifetime
- 2004-01-22 AT AT04300036T patent/ATE518048T1/de not_active IP Right Cessation
- 2004-02-17 US US10/779,973 patent/US7111595B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3858135A (en) * | 1973-08-14 | 1974-12-31 | S Gray | Push-pull linear motor |
EP0816644A2 (fr) * | 1995-02-15 | 1998-01-07 | Toyota Jidosha Kabushiki Kaisha | Un dispositif d'entraínement de soupape utilisant une bobine électromagnétique pour déplacer un corps de soupape avec moins de bruit |
EP0936636A2 (fr) * | 1998-02-10 | 1999-08-18 | DaimlerChrysler AG | Electroaimant |
US6308667B1 (en) * | 2000-04-27 | 2001-10-30 | Visteon Global Technologies, Inc. | Actuator for engine valve with tooth and socket armature and core for providing position output and/or improved force profile |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008090452A2 (fr) * | 2007-01-24 | 2008-07-31 | Toyota Jidosha Kabushiki Kaisha | Soupape entraînée de façon électromagnétique |
WO2008090452A3 (fr) * | 2007-01-24 | 2008-09-18 | Toyota Motor Co Ltd | Soupape entraînée de façon électromagnétique |
EP3358582A1 (fr) * | 2017-02-03 | 2018-08-08 | Hamilton Sundstrand Corporation | Actionneur électromagnétique alternatif avec armature à équilibrage de flux et noyaux fixes |
US10693358B2 (en) | 2017-02-03 | 2020-06-23 | Hamilton Sundstrand Corporation | Reciprocating electromagnetic actuator with flux-balanced armature and stationary cores |
Also Published As
Publication number | Publication date |
---|---|
ES2365916T3 (es) | 2011-10-13 |
EP1450009A3 (fr) | 2005-03-30 |
US7111595B2 (en) | 2006-09-26 |
FR2851290B1 (fr) | 2007-02-09 |
FR2851290A1 (fr) | 2004-08-20 |
ATE518048T1 (de) | 2011-08-15 |
EP1450009B1 (fr) | 2011-07-27 |
US20050034690A1 (en) | 2005-02-17 |
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